Motor circuit

Details Motor circuit Motor circuit

1997-02-28

1998-08-25

Ip, Paul

Electricity: motive power systems

Switched reluctance motor commutation control

318139, 318439, 123396, 123399, H02P 516, H02P 700, F02D 1100

Patent

active

057986240

ABSTRACT:
A motor control circuit for a d.c. commutator-type motor includes a semi-conductor driver circuit with a current sensor which provides an output voltage signal representing the instantaneous current in the motor. A detector circuit analyses the output signal of the sensor to provide pulses indicating the motor shaft position. The detector circuit includes a level-shifting, scaling and filtering circuit which substantially removes frequency components below a predetermined level and a pulse generator driven by the level shifting, scaling and filtering circuit.

REFERENCES:
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patent: 5020125 (1991-05-01), Losic et al.
patent: 5051670 (1991-09-01), De Piola
patent: 5063740 (1991-11-01), Aihara
patent: 5132602 (1992-07-01), Jorgensen et al.
patent: 5163402 (1992-11-01), Taguchi et al.
patent: 5199401 (1993-04-01), O'Neil et al.
patent: 5333584 (1994-08-01), Kamio et al.
patent: 5386185 (1995-01-01), Beck et al.
patent: 5463298 (1995-10-01), Kamio et al.
patent: 5519295 (1996-05-01), Jatnieks

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